"As these viruses continue to evolve, public health officials watch carefully to see whether new strains will be more easily ...

A large new study may help form some answers to those questions. In line with prior estimates, it finds that almost a quarter ...

That has shortened significantly now.” An incubation period is the length of time it takes someone to develop symptoms after exposure to a pathogen. The incubation period for SARS-CoV-2, the virus ...

The novel coronavirus that causes COVID-19 has spread globally, killing hundreds of thousands of people and infecting millions more. The pandemic has upended life around the world, delivering a ...

Thanksgiving week is typically one of the biggest travel periods of the year, but winter holidays like Christmas, Hanukkah, Kwanzaa and New Year's Eve aren't that far behind—and all that traveling, ...

Six years after the start of the COVID-19 pandemic, the virus still exists. A public health expert explains what Long COVID ...

New research reveals that even mild respiratory infections can leave lasting biological changes. However, COVID-19 stands apart, with unique effects on the brain that may help explain long COVID.

The novel coronavirus that causes COVID-19 has spread globally, killing hundreds of thousands of people and infecting millions more. The pandemic has upended life around the world, crippling the ...